Rebuke/Command Undead (Su): Atropals can rebuke or command undead as a cleric with a level equal to the atropal’s HD + 6.

Negative Energy Aura (Su): A 30-foot-radius spread negative energy aura spreads from each atropal. All undead in the field (including the atropal) are treated as if having turn resistance +20 and a negative energy version of fast healing 20. Living creatures in the aura are treated as having ten negative levels unless they have some sort of negative energy protection or protection from evil. Creatures with 10 or fewer HD or levels perish (and, at the atropal’s option, rise as spectres under the atropal’s command 1 minute later).

Constitution Drain (Su): When the atropal hits a living opponent with a touch attack, the opponent takes 5 points of permanent Constitution drain, or 10 points on a critical hit. The atropal heals 20 points of damage, or 40 points on a critical hit, whenever it drains Constitution, gaining any excess as temporary hit points. These temporary hit points last a maximum of 1 hour. The attack allows a Fortitude save (DC 59). The DC is Charisma-based.

Energy Drain (Su): When the atropal hits with a ranged touch attack (a ray of darkness that it shoots from one eye to a range of 400 feet), the resultant energy drain bestows four negative levels, or eight negative levels on a critical hit. For each negative level bestowed on an opponent, the atropal heals 10 points of damage, or 20 on a critical hit, gaining any excess as temporary hit points. These temporary hit points last a maximum of 1 hour. After 24 hours have passed, the afflicted opponent must attempt a Fortitude save (DC 59) for each negative level. If successful, the negative level goes away with no harm to the creature; otherwise, the creature’s level decreases by one. The DC is Charisma-based.

Regeneration (Ex): Atropals take normal damage from good weapons or sentient weapons (or otherwise living weapons).

Summon Nightcrawler (Sp): Five times per day an atropal can summon a nightcrawler.

Undead Traits: Immune to poison, sleep, paralysis, stunning, disease, death, effects, necromantic effects, mind-affecting effects, and any effect requiring a Fortitude save unless it also works on objects. Not subject to critical hits, subdual damage, ability damage, ability drain, or energy drain. Negative energy heals. Not at risk of death from massive damage, but destroyed at 0 hit points or less. Darkvision 60 ft. Cannot be raised; resurrection works only if creature is willing.